Penn Gazette | Essays | Notes from the Undergrad
http://www.upenn.edu/gazette/1109/expert.html

Yawn It’s one of the best things you can do for your brain.

It’s one of the best things you can do for your brain.

"My advice is simple. Yawn as many times a day as possible: when you wake up, when you’re confronting a difficult problem at work, when you prepare to go to sleep, and whenever you feel anger, anxiety, or stress. Yawn before giving an important talk, yawn before you take a test, and yawn while you meditate or pray because it will intensify your spiritual experience."